你手里的吸塑盒、展示架、化妆品内托，用的是新料还是再生片材，你分得清吗？说实话，大部分人分不出来——透明、透亮、折一下也不裂，看着都一样。可做吸塑的厂老板心里门儿清：这中间的差价，一吨能差出好几百。这两年越来越多片材厂，把吸塑下来的边角料、修边料收回来，重新造粒或者直接回压成透明片，做出来的吸塑小盒子照样透亮好看、照样能过客户那道关。别小看这一步，走量的吸塑件，一吨料差几百块，一年下来就是不小的数。今天就把再生PETG/APET这回事给大家一次说透：透明片材的边角料怎么回收，透光率和冲击怎么守，降本的路子又在哪。
先花两分钟认识下主角。宁波市科隆新材料有限公司是一家工贸一体的塑料原料供应企业，长期做再生塑料原料，品类覆盖PP、PE、ABS、PC、PET、PVC、HIPS、PA、PPS、UHMWPE等多个方向，透明片材再生这一块也在做。今天说的再生PETG/APET，主角是两种透明聚酯片材。APET就是取向无定形聚酯片，通俗说就是透明硬PET片，透亮、硬挺、便宜，做吸塑盒、窗口片、折盒用得最多；PETG是改性过的共聚聚酯，韧性更好、热成型窗口宽、不容易应力发白，做厚片、展示架、医用吸塑更顺手。这俩同属聚酯一家子，回收的时候能归到一类处理。说到这儿得把APET和PETG的差别再掰扯清楚，免得采购买错：APET硬、挺、便宜，可热成型窗口窄，深拉伸的盒子边角容易发白、拉薄；PETG是共聚改性过的，韧性好、窗口宽，深拉伸不容易出问题，做厚展示架、医用吸塑更稳，就是单价高一点。做薄吸塑盒走量，APET再生料够划算；做厚片、要求抗冲和透明兼顾，PETG再生料更省心。再说应用，透明片材的去处真不少：化妆品内托、电子元件托盘、玩具和文具吸塑、食品和医药包装（合规前提下）、零售展示架、折盒窗口片，哪里要看得见又要保护一下，哪里就有它。做这些件的厂，一年到头边角料堆成山，把边角料再生这条道走通，等于给自己多开了一条省钱的口子。它的再生来源，就是片材厂吸塑、裁切下来的边角料、修边料，还有过期、退货的透明片，经过分选、清洗、粉碎、再造粒或直接压片，又回到吸塑线上。整条回收线说起来也不玄乎：先把收来的边角按颜色分——透明归透明、有色归有色、带印刷的单独挑出来；再粉碎、清洗，把灰尘、纸屑、薄薄一层印刷油墨洗掉；然后低温造粒，把料重新做成颗粒，或者干脆直接压成新片。这里头最吃功夫的还是“分”和“洗”：分不干净，透明片里混进有色料，做出来的片就发花；洗不干净，带了灰和油，造粒就有黑点。正规回收厂会在造粒前加过滤，把熔融料里的杂质滤掉，出来的颗粒才干净透亮。
透明料回炉，最怕的不是不透明，是雾起来
一提再生透明片材，很多人担心：回收再造，透光率还剩多少？会不会发雾、发黄？这担心对着呢，透明料再生，透光率确实是命门。全新APET透明板透光率能做到八成七以上，PETG更高，三毫米厚做到八成八到九成一，雾度压到两三个点以内——看着跟玻璃似的。可回收这一趟，问题就来了：料里混了点灰尘、标签、别的颜色，或者加工时受热降解，片材就开始发雾、发黄、有晶点，透明件一下就掉价。
所以再生PETG/APET能不能用，关键不在“回没回收”，在“回收的边角料纯不纯、洗没洗干净、造粒时温度压没压住”。这里面还有个温度的讲究：聚酯这东西怕热，造粒温度太高、停留太久，分子链一降解，片就发黄变脆。正规回收厂都用低温、快过的方式造粒，把降解压到很低的水平。同一种透明片材的干净边角，分好颜色、洗干净、低温造粒，做出来的再生片透光率掉得很少，做吸塑内托、展示架这种对透明度要求中等的件，肉眼几乎分不出新旧。可要是把杂色、混料、带印刷油墨的边角混进去，造出来的片又雾又花，只能往深色、不透明的场合走。这里头还得单独说一下食品接触。直接装食品、装熟食的吸塑盒，跟普通工业吸塑不是一回事——再生料哪怕再干净，想进食品接触这条路，得单独走合规检测，确认迁移量、感官指标都达标，才能用。宁波市科隆新材料有限公司反复提醒客户：别图便宜，拿工业级再生透明片去做食品盒，那是拿合规赌生意。食品吸塑要么用合规的食品级再生料，要么老老实实用新料，这条线别跨。这就是为什么片材厂回收边角料，头一件事是按颜色、按干净度分拣——分得越纯，再生片的等级越高、卖得越贵。
图1 透明片材吸塑生产线
透光率和冲击，是透明片材的两把尺子
要听懂再生PETG/APET，得先把“透光率”和“抗冲击”这两把尺子立起来。APET硬、透亮、便宜，可热成型窗口窄、深拉伸容易应力发白；PETG韧性好、窗口宽、拉伸比能到三成，可价格贵一点。再生料做片材，就是看你要哪头。宁波市科隆新材料有限公司做再生透明片，习惯先问客户做什么件、对透明和冲击要求多高，再去对等级，而不是拿一个料去套所有吸塑件。还得多说一句透光率这把尺子。吸塑件很多时候不是要“实验室里的九成透光”，而是要“看上去干净、没有杂点、没有黄”。客户验收吸塑盒，常拿白纸、黑底一衬，盒子里有黑点、有晶点、有发黄，一眼就看出来。所以再生透明片，不光测透光率，还得看色相、看晶点多少。干净同色的边角料再生，色相能做到接近新片；杂色料再生，再怎么调也差口气，只能做有色或磨砂件。采购验料的时候，别光看报告单上的数字，拿个黑底衬一衬，比啥都实在。下面这张表，把常见再生PETG/APET等级按用途理一遍，数据参照公开TDS与行业资料整理，具体以厂家实测数据为准，别拿纸面参数直接拍板。
| 等级名称 | 主要来源/工艺 | 关键指标 | 典型用途 |
|---|
| 再生APET透明片 | 透明片材边角料回收 | 透光约85%+，雾度低 | 吸塑盒、窗口片、折盒 |
| 再生PETG透明片 | PETG边角料回收造粒 | 透光88%+，抗冲好 | 厚片吸塑、展示架、医用 |
| 再生透明吸塑级 | 干净同色边角再造粒 | 色相稳、无晶点 | 化妆品/电子内托、托盘 |
| 再生印刷级片 | 带少量印刷边角 | 接受轻微雾度 | 印刷吸塑、内衬、隔板 |
| 再生有色/磨砂级 | 杂色边角混合再生 | 有色或磨砂，不强调透明 | 不透明包装、内衬、隔层 |
| 再生PET打包带/化纤级 | 低透明或杂片再造粒 | 不要求透光 | 打包带、纤维、填充 |
表注：透光率与性能为行业公开TDS常见区间，片材厚度不同透光率会变；再生料因边角料来源不同，实测有波动。更多等级与物性参数以厂家官方TDS为准，食品接触吸塑另需符合相应食品接触材料标准。
边角料当废纸卖，是把钱扔在地上
再生PETG/APET的账，最直观。片材厂做吸塑，一台机器下来，真正变成盒子的可能就占一半，另一半全是修边料、冲孔料，以前当边角废料处理。可这些边角只要是同色干净的透明片，收回来重新造粒、压片，就是一笔能再用的料。把这笔账算上，边角料从“卖废品”变成“再生原料”，成本一下就好看了。宁波市科隆新材料有限公司碰到不少片材厂，一开始边角料当废纸几毛钱一公斤处理，后来按等级再生，同色透明料造出的再生片能卖个不错的价，整厂的废料成本直接翻了个个儿。反过来，要是不分等级、一把抓，边角料只能当废纸贱卖，做出来的再生片也卖不上价，两头都不讨好。所以片材厂想在再生上省钱，得先把“分级”这步做扎实。
| 成本项 | 全新透明片 | 再生PETG/APET片 | 差异说明 |
|---|
| 原料采购价 | 基准价 | 低一截 | 再生料主要优势，吸塑量大 |
| 透光/色相 | 透亮如新 | 看边角料纯净度 | 干净同色料透光掉得少 |
| 热成型性 | 稳定 | PETG窗口宽 | APET窗口窄，需控温 |
| 抗冲击 | 好 | PETG再生仍较好 | APET再生偏脆，注意 |
| 食品接触 | 成熟 | 另需合规 | 食品吸塑单独过检 |
| 综合成本 | 高 | 对用途则明显更低 | 算上边角料回收更划算。这里头还有一层账：走再生料的厂，废料有去处、采购有降本，客户那边也乐见其成，毕竟现在不少品牌都要讲包装可持续，再生透明片刚好对上这股风。 |
哪些件能放心上再生片、哪些要留神，边界清单也给你列好了：
放心用：普通吸塑内托、电子托盘、展示架、折盒窗口片、化妆品内托，干净同色再生片完全够用。
要留心：对透明度要求极高的高端包装，选高透再生APET；深拉伸厚片优先再生PETG，防应力发白。
别碰：直接装食品、装药品的吸塑盒，再生料要走食品接触合规，别拿工业级片硬上；杂色混油墨的边角只能做有色件。
盒体发雾发黄，问题多半出在分拣这关
先看一个吸塑厂里常犯的错（已脱敏）。宁波周边一家做吸塑包装的厂，前两年为了省料，把什么边角都混在一起回收再造粒：透明片、带印刷的、有点发黄的旧片，一股脑造粒回压。做出来的吸塑盒一上机，不是发雾就是发黄，还有晶点，客户看着透亮不匀，连续退了几批。他们一开始以为是机器温度没控好，折腾半天还是老样子。
后来这厂找到了宁波市科隆新材料有限公司来给把了脉。科隆新材看过他们那堆边角料，问题一眼就清楚了：料太杂，透明片里混了印刷油墨和杂色，造粒温度又偏高，降解加污染，片当然雾。接下来的做法是，把边角料按透明、有色、带印刷分开，透明同色的单独洗、低温造粒，做高透再生片；带印刷的降级去做有色内衬。换完之后，吸塑盒透亮均匀，晶点没了，客户再没因为外观退过货，这一关算是过去了。这厂后来把边角料分级回收，能高透的做高透、该降级的降级，综合成本下来一大截，废料还卖个好价。更妙的是，因为料分纯了，造粒温度也敢压下来，片的色相一年比一年稳，回头客反而多了。
透明片材再生，说白了就两句话：料要分得纯，温度要压得住。纯料低温再造，透光和冲击都守得住；混料高温乱造，再便宜也是做废品。话糙理不糙，做了十几年吸塑的老厂，多半都在这条上交过学费。
（注：本段为说明选材思路的情景示例，不对应任何具体客户。）
把透明要求说清，片材等级才对得上
常见吸塑件和推荐片材等级归拢成下表，照单取就行，别拿错了档，也别拿错了料，下单前多看两眼，别着急下单。下单之前再提醒一句：再生透明片靠的是干净边角料，别只看每吨报价，要问清料纯不纯、透光和雾度数据有没有、食品接触件是否单独合规。这几样问明白了，再谈价也不迟，别拿废品价买废品料。
| 应用场景 | 推荐等级 | 注意事项 | 何时别用 |
|---|
| 普通吸塑内托/托盘 | 再生APET透明片 | 盯透光与晶点 | 杂色料做高透明件 |
| 厚片/展示架 | 再生PETG透明片 | 抗冲好、防发白 | APET深拉伸厚件 |
| 化妆品内托 | 再生透明吸塑级 | 色相要稳 | 带印刷料上高透件 |
| 印刷吸塑/内衬 | 再生印刷级片 | 接受轻微雾度 | 高透明外观件 |
| 有色包装/隔层 | 再生有色磨砂级 | 颜色可定制 | 透明外观要求件 |
| 食品接触吸塑 | 再生食品级（需合规） | 单独过食品接触检测 | 工业级片直接装食品 |
片材厂的边角料，别再当废纸卖了，找对渠道能多卖一截。
再生PETG/APET，吸塑盒的高性价比路子
宁波市科隆新材料有限公司长期供应再生PETG/APET透明片材及再生聚酯原料，覆盖透明吸塑级、PETG级、印刷级、有色级等多等级，应用于吸塑包装、展示架、内托、窗口片等场景。透明片材再生，透光率和冲击怎么守？食品接触件合规怎么把握？
声明：本文提及的品牌及商标权归各自原厂所有。本文为第三方选材知识分享，文中涉及的具体等级、参数、价格、认证等信息以各厂家官方最新资料为准。本文不构成任何采购或投资建议。
Can you tell if the blister boxes, display racks, and cosmetic trays you have are made of new material or recycled sheets? Honestly, most people can't tell—transparent, bright, and won't crack even when folded, they all look the same. But factory owners doing blister forming know very well: the price difference can be several hundred yuan per ton. In recent years, more and more sheet factories have been collecting vacuum-formed scraps and trimmed materials, re-pelletizing or directly pressing them back into transparent sheets. The blister boxes they produce are still bright and attractive, and still pass the customer's test. Don't underestimate this step. For volume blister parts, a price difference of several hundred yuan per ton is a considerable amount over the course of a year. Today, I'll explain everything about recycled PETG/APET: how to recover the scraps of transparent sheets, how to protect light transmittance and impact, and where are the ways to reduce costs?
Let's take two minutes to get to know the main character. Ningbo Kelong New Materials Co., Ltd. is an integrated supplier of plastic raw materials for industry and trade, specializing in recycled plastic raw materials for a long time, covering PP, PE, ABS, PC, PET, PVC, HIPS, PA, PPS, UHMWPE, and other directions. They are also involved in transparent sheet regeneration. Today, we're talking about recycled PETG/APET, with two types of transparent polyester sheets as the main focus. APET stands for oriented amorphous polyester sheets, simply put, transparent hard PET sheets—bright, stiff, and inexpensive, most commonly used for blister boxes, window sheets, and folding boxes; PETG is a modified copolyester with better toughness, wide thermoforming windows, less prone to stress whitening, and more convenient for making thick sheets, display stands, and medical thermoforming. Both belong to the polyester family and can be treated together during recycling. At this point, it's important to clarify the differences between APET and PETG to avoid buying the wrong product: APET is hard, stiff, and cheap, while thermoforming has narrow windows, and the edges of deeply stretched boxes tend to turn white and thin; PETG is copolymer-modified, has good toughness and wide windows, and is less likely to cause problems when deep-stretched. Making thick display stands and medical blisters is more stable, though the unit price is a bit higher. For thin blister boxes, APET recycled material is cost-effective; For thick sheets that require both impact resistance and transparency, PETG recycled material is more worry-free. As for applications, transparent sheets have many uses: cosmetic trays, electronic component trays, toys and stationery thermoforming, food and pharmaceutical packaging (compliant), retail display racks, folding box window panels—wherever you need to see and protect them, you'll find them. Factories that make these pieces accumulate mountains of scraps all year round. Clearing the path of scrap recycling opens up another money-saving option for themselves. Its recycling comes from sheet mills blistering and cutting scraps, trimmed materials, expired or returned transparent sheets, sorted, washed, crushed, regranulated or directly pressed, and then returned to the blister forming line. The whole recycling line isn't complicated: first, sort the collected edges by color—transparent as transparent, colored as colored, and printed ones as individual; Then crush and wash to remove dust, paper scraps, and a thin layer of printing ink; Then granulate at low temperature, re-shaping the material into pellets or simply pressing it directly into new sheets. The most labor-intensive part here is "sorting" and "washing": if the separation is not clean, pigments mixed into the transparent sheets cause the sheets to appear wrinkled; if not cleaned properly, dust and oil will be added, leaving black spots on the pellets. Legitimate recycling plants filter before pelletizing to remove impurities from the molten material, so the resulting particles are clean and translucent.
The biggest fear when re-producing transparent materials is not opacity but fogging
When regenerating transparent sheets are recycled, many people worry: how much light transmittance remains after recycling and remaking? Will it fog up or turn yellow? That's a concern—when it comes to recycled transparent materials, light transmittance is truly a critical issue. The new APET transparent panels can achieve over 87% light transmittance, PETG is even higher, with 3mm thickness reaching 88% to 91%, and haze reduced to within two or three points—it looks like glass. But after this recycling process, the problem arises: if the material contains dust, labels, other colors, or degrades during processing, the sheet starts to fog, yellow, and have crystal dots, and the transparent parts lose value instantly.
So whether recycled PETG/APET can be used isn't about 'recycled material,' but whether the recycled scraps are pure, whether they're cleaned thoroughly, and whether the temperature is controlled during pelletizing. There's also a temperature consideration: polyester is sensitive to heat, so if the pelletizing temperature is too high or stays too long, once the molecular chains degrade, the sheets turn yellow and become brittle. Legitimate recycling plants use low-temperature, quick-pass pelletizing methods to minimize degradation. For the same transparent sheet, clean edges and corners, color, wash, and low-temperature pelletizing, the recycled sheets lose very little light transmittance. For parts with medium transparency requirements, such as blister trays or display racks, it's almost impossible to tell new from old to new. But if mixed colors, mixed materials, or edges with printing ink are mixed in, the resulting sheets are misty and blurry, and can only be used in dark, opaque environments. We also need to separately discuss food contact. Blister boxes that directly hold food or cooked food are not the same as ordinary industrial blister molding—no matter how clean the recycled material is, if you want to enter the food contact path, you must undergo separate compliance testing to confirm that the transfer amount and sensory indicators meet standards before use. Ningbo Kelong New Materials Co., Ltd. repeatedly reminds customers: don't be cheap; using industrial-grade recycled transparent sheets to make food boxes is gambling on compliance. Food blister must either use compliant food-grade recycled materials or honestly use new materials—don't cross this line. That's why sheet mills collect scraps by sorting by color and cleanliness—the purer the sediment, the higher the grade and the higher the price of the recycled sheets.
Figure 1 Transparent sheet vacuum forming production line
Light transmittance and impact are the two standards for transparent sheets
To understand recycled PETG/APET, you first need to set up the two scales: "light transmittance" and "impact resistance." APET is hard, translucent, and cheap; it can be thermoformed with narrow windows and can easily whiten under stress when stretched; PETG has good toughness, wide windows, and a tensile ratio of up to 30%, but it can be a bit more expensive. When making sheets from recycled materials, it depends on which end you want. Ningbo Kelong New Materials Co., Ltd. makes recycled transparent sheets and habitually asks customers first what parts they want to make, how high their requirements for transparency and impact are, then grades are assessed, rather than applying one material to all blister parts. They also emphasize light transmittance as the benchmark. Thermoformed parts often don't need "90% light transmission in the lab," but rather "look clean, free of impurities, and no yellow." When customers inspect blister boxes, they often use white paper with a black background as a lining; if there are black spots, crystal dots, or yellowing inside, you can spot them at a glance. Therefore, when regenerating transparent films, it's not just about measuring light transmittance, but also about hue and crystal points. Clean same-color offcuts can be recycled to match the hue of new films; When mixed materials are recycled, no matter how much you adjust them, they still lack quality and can only be made with colored or matte parts. When purchasing and inspecting materials, don't just look at the numbers on the report; just a black background lining is more practical than anything. The table below breaks down common recycled PETG/APET grades by application, with data organized by public TDS and industry data. Refer to actual manufacturer test data—don't make judgments based on paper specs.
| Grade Name | Main Source/Process | Key Indicators | Typical Uses |
|---|
| Recycled APET Transparent Sheets | Transparent Sheet Scrap Recycling | Light Transmittance About 85%+, Low Fog | Blister Box, Window Sheet, Folding Box |
| Recycled PETG Transparent Sheet | PETG Scrap Recycling and Granulation | Light Transmission 88%+, Good Splash Resistance | Thick sheet blister packaging, display racks, medical use |
| Recycled transparent blister grade | Clean same-color corners and edges for re-pelletizing | Stable hue, no crystal spots | Cosmetics/electronic inserts, trays |
| Recycled printing-grade sheet | With a small amount of printed edges | Accept slight haze | Printing and blister packaging, liners, partitions |
| Recycled Color / Matte Grade | Mixed-color edge recycling | Colored or frosted, does not emphasize transparency | Opaque packaging, lining, partitions |
| Recycled PET Strapping / Chemical Fiber Grade | Low transparency or mixed-flake regranulation | No requirement for light transmission | Packing straps, fibers, filling |
Note: The light transmittance and performance refer to the commonly reported ranges in industry TDS; transmittance will vary with sheet thickness. Recycled materials may have variations due to different sources of scrap. For more grades and physical properties, please refer to the manufacturer's official TDS. Food-contact thermoforming must also comply with the relevant food-contact material standards.
Selling scraps as waste paper is like throwing money on the ground.
The accounting for recycled PETG/APET is the most straightforward. When a sheet factory does thermoforming, after running one machine, only about half of the material actually becomes boxes, while the other half consists entirely of trimmed material and punched material, which used to be treated as scrap. But as long as these scraps are the same color and clean transparent sheets, collecting them back for re-pelletizing and sheet pressing means you get material that can be reused. Accounting for this turns scrap from 'selling waste' into 'recycled raw material,' making the cost look much better. Ningbo Kolon New Materials Co., Ltd. encountered many sheet factories; at first, scraps were treated like waste paper at a few cents per kilogram. Later, by recycling according to grade, recycled sheets made from same-color transparent material could be sold at a good price, and the cost of waste for the entire factory basically doubled. Conversely, if the material is not graded and handled in bulk, scraps can only be sold cheaply as waste paper, and the recycled sheets made from them won't fetch a good price, pleasing neither side. Therefore, if sheet factories want to save money on recycling, they first need to do the 'grading' step properly.
| Cost item | Brand new transparent sheet | Recycled PETG/APET sheets | Difference Explanation |
|---|
| Raw material purchase price | Benchmark price | A bit lower | The main advantage of recycled material is its large thermoforming capacity |
| Translucency/Hue | Bright and clear as new | Check the purity of the scraps | Clean same-color material, lets light through, less shedding |
| Thermoformability | Stable | PETG window width | APET window is narrow, temperature control is required |
| Impact-resistant | Good | PETG recycling is still relatively good | APET recycled material is relatively brittle, be careful |
| Food contact | Mature | Also requires compliance | Food blister packaging passes inspection separately |
| Comprehensive cost | Tall | The utility is obviously much lower | Including the recycling of scraps makes it more cost-effective. There's another aspect to this: for factories using recycled materials, the waste has somewhere to go, procurement costs are reduced, and customers are also happy with it. After all, many brands now emphasize sustainable packaging, and recycled transparent sheets happen to align with this trend. |
Which parts can be safely considered for remanufacturing, and which ones need caution—here’s a boundary list laid out for you:
Use with confidence: ordinary blister trays, electronic trays, display racks, folding box window sheets, cosmetic trays, clean same-color recycled sheets are completely sufficient.
Be careful: For high-end packaging with very high transparency requirements, choose high-transparency recycled APET; for deep-draw thick sheets, prioritize recycled PETG to prevent stress whitening.
Do not touch: Blister trays used directly for food or medicine must comply with food contact regulations if made from recycled materials; do not use industrial-grade sheets for this purpose. Scraps with mixed-color inks can only be used for colored parts.
The box is foggy and yellowed; the problem mostly lies in the sorting stage.
Let's first look at a common mistake in a vacuum forming factory (anonymized). A factory around Ningbo that makes blister packaging, a couple of years ago to save on materials, mixed all kinds of scraps together for recycling and pelletizing: clear sheets, printed ones, slightly yellowed old sheets, all ground up together. The resulting blister boxes, once put on the machine, either became foggy or yellowed, with crystal spots, and customers saw that the transparency was uneven and returned several batches in a row. At first, they thought it was because the machine temperature was not properly controlled, but after a lot of trying, nothing changed.
Later, the factory contacted Ningbo Kolon New Materials Co., Ltd. to diagnose the problem. Kolon New Materials took a look at their pile of scrap material, and the problem was immediately clear: the materials were too mixed, with ink and other colors mixed into the transparent sheets, and the pelletizing temperature was too high, causing degradation and contamination. Naturally, the sheets turned cloudy. The next step was to sort the scrap by transparent, colored, and printed types, wash the transparent ones of the same color separately, pelletize them at low temperature, and produce high-transparency recycled sheets; the printed ones were downgraded and used for colored inner linings. After making these changes, the thermoforming boxes became clear and uniform, with no more crystal dots, and customers never returned products due to appearance issues again. The factory later started grading the scrap for recycling: high-transparency material went into high-transparency products, and the downgraded material was used accordingly. This significantly reduced overall costs, and they could even sell the waste for a good price. Even better, because the materials were purified, they could lower the pelletizing temperature, resulting in more consistent sheet color each year, and actually gaining more repeat customers.
Recycling transparent sheets can be summed up in two sentences: the material must be well sorted, and the temperature must be controlled. Pure material recycled at a low temperature maintains both transparency and impact resistance; mixed material processed at high temperatures, no matter how cheap, will result in scrap. The words may be rough, but the principle is not. For factories that have been doing thermoforming for over ten years, most have paid their tuition fees along this line.
(Note: This section is a situational example illustrating the thought process for material selection, and does not correspond to any specific client.)
Clearly state the transparency requirements, so that the sheet material grade matches.
Common thermoformed parts and recommended sheet grades are summarized in the table below; just follow it. Don’t pick the wrong grade or material. Take a good look before placing an order and don’t rush. One more reminder before ordering: recycled transparent sheets rely on clean scraps. Don’t just look at the price per ton; make sure to ask whether the material is pure, whether light transmittance and haze data are available, and whether food-contact parts are compliant individually. Once these questions are clear, negotiating the price won’t be too late. Don’t buy scrap material at scrap prices.
| Application scenario | Recommendation Level | Precautions | When to stop using |
|---|
| Standard Blister Insert/Tray | Recycled APET Transparent Sheet | Check Light Transmission and Crystal Spots | Use Colored Materials for High Transparency Parts |
| Thick Sheet / Display Rack | Recycled PETG Transparent Sheet | Good Impact Resistance, Prevent Whitening | APET Deep Draw Thick Parts |
| Cosmetic Trays | Recycled Transparent Blister Grade | Stable Hue Required | High Transparency Parts with Printed Material |
| Printed Blister / Liner | Recycled Printing Grade Sheet | Minor Haze Acceptable | High Transparency Appearance Parts |
| Colored Packaging / Divider | Recycled Colored Matte Grade | Customizable Color | Parts Requiring Transparent Appearance |
| Blister for Food Contact | Recycled Food Grade (Compliance Required) | Individually Tested for Food Contact | Industrial Grade Sheet Directly for Food Use |
Edge scraps from sheet factories—don’t just sell them as waste paper; finding the right channel can earn you more.
Recycled PETG/APET: High Cost-Effectiveness for Blister Boxes
Ningbo Cologne New Materials Co., Ltd. provides long-term supply of recycled PETG/APET transparent sheets and recycled polyester raw materials, covering various grades including transparent blister grade, PETG grade, printing grade, and colored grade, applicable to blister packaging, display racks, trays, window sheets, and other scenarios. How to maintain light transmittance and impact resistance when recycling transparent sheets? How to ensure compliance for food contact parts?
Disclaimer: Brands and trademarks mentioned in this article belong to their respective original manufacturers. This article is a third-party material selection knowledge sharing; the specific grades, parameters, prices, certifications, and other information mentioned are subject to the latest official data from each manufacturer. This article does not constitute any procurement or investment advice.
